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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-07 11:13:41 +02:00
FFmpeg/libavformat/vorbiscomment.c
Michael Niedermayer f9ecb849ef Merge remote-tracking branch 'qatar/master'
* qatar/master:
  crypto: Use av_freep instead of av_free
  lavf: don't try to free private options if priv_data is NULL.
  swscale: fix types of assembly arguments.
  swscale: move two macros that are only used once into caller.
  swscale: remove unused function.
  options: Add missing braces around struct initializer.
  mov: Remove leftover crufty debug statement with references to a local file.
  dvbsubdec: Fix compilation of debug code.
  Remove all uses of now deprecated metadata functions.
  Move metadata API from lavf to lavu.

Conflicts:
	doc/APIchanges
	libavformat/aiffdec.c
	libavformat/asfdec.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/cafdec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/mp3enc.c
	libavformat/wtv.c
	libavutil/avutil.h
	libavutil/internal.h
	libswscale/swscale.c
	libswscale/x86/swscale_template.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-06-09 04:47:19 +02:00

76 lines
2.5 KiB
C

/*
* VorbisComment writer
* Copyright (c) 2009 James Darnley
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#include "metadata.h"
#include "vorbiscomment.h"
#include "libavcodec/bytestream.h"
#include "libavutil/dict.h"
/**
* VorbisComment metadata conversion mapping.
* from Ogg Vorbis I format specification: comment field and header specification
* http://xiph.org/vorbis/doc/v-comment.html
*/
const AVMetadataConv ff_vorbiscomment_metadata_conv[] = {
{ "ALBUMARTIST", "album_artist"},
{ "TRACKNUMBER", "track" },
{ "DISCNUMBER", "disc" },
{ 0 }
};
int ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string,
unsigned *count)
{
int len = 8;
len += strlen(vendor_string);
*count = 0;
if (m) {
AVDictionaryEntry *tag = NULL;
while ((tag = av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
len += 4 +strlen(tag->key) + 1 + strlen(tag->value);
(*count)++;
}
}
return len;
}
int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m,
const char *vendor_string, const unsigned count)
{
bytestream_put_le32(p, strlen(vendor_string));
bytestream_put_buffer(p, vendor_string, strlen(vendor_string));
if (*m) {
AVDictionaryEntry *tag = NULL;
bytestream_put_le32(p, count);
while ((tag = av_dict_get(*m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
unsigned int len1 = strlen(tag->key);
unsigned int len2 = strlen(tag->value);
bytestream_put_le32(p, len1+1+len2);
bytestream_put_buffer(p, tag->key, len1);
bytestream_put_byte(p, '=');
bytestream_put_buffer(p, tag->value, len2);
}
} else
bytestream_put_le32(p, 0);
return 0;
}